Spike Prime - Circle

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Let's begin

Chords...

Build

Model:

Pictures:

The sensor is placed to the center of rotation of the robot - right in the middle of the wheels.

Building instructions:

• Circle center finding robot (PNG)

Download building instructions:

• whole system (pdf)

Download stud.io model:

• vehicle (stud.io)

...description...

Connections:

• left motor - D
• right motor - C
• light sensor - F

Programs

Finding circle center using chords:

Finding circle center using Tales circle:

Download:

• circle_chords.llsp
• circle_tales.llsp

...description...

Measure, analyze, think

• Make your own recording

• Perform measurements with your model and discuss in your group what has happened.

Explore and modify

• circle

Present

• What happens in the chords example if the robot is already started at the diameter, will it still work?
• What happens in the tales example in the same situation?
• Will this method still work if the robot is started on circle tangent? If not, can you propose changes to he program tailored for that situation?
• Prepare a short presentation for other groups. Tell others about your experiments with finding circle centers.

Additional resources

• Download: Circle - all media files